The time when a bully falls in love with a bullied person

The female protagonist, with her round glasses, long hair, and shyness, is treated as invisible due to her lack of presence, and the notorious bully Taehyung, known to the entire school. Their first meeting wasn't a good one, but Taehyung began to grow increasingly concerned when the female protagonist ignored him and talked to other men. It didn't take long for the bully to fall for him.